Johnson Controls TEC2103-2 Installation Instructions Manual page 4

Terminal
Y1 Energizes on a call for first stage cooling
Y2 Energizes on a call for second stage cooling
G Energizes fan in accordance with the selected fan mode
RC 24 VAC from equipment transformer
C 24 VAC (common) from equipment transformer
RH 24 VAC for heating stages
W1 Energizes on a call for first stage heating
W2 Energizes on a call for second stage heating
D1 Configurable digital input
D2 Configurable digital input
RS Remote room sensor
Scom
Sensor common
OS
Auxiliary/Outdoor air sensor
N2+, N2-, REF
N2 Bus
Y2 Y1
G
Cool 1
Cool 2 Fan
24 VAC
Thermostat Power
Connecting the N2 Bus
To connect the N2 Bus:
1. Observe the polarity when connecting the N2 Bus
wires to the TEC2103-2 thermostat.
Note: An End-of-Line (EOL) is not needed on the
N2 Bus at the TEC2103-2 thermostat. However,
one EOL is needed at the BAS (N30, Companion,
Network Control Module).
2. Continue this process for each TEC2103-2
thermostat using the daisy chain wiring method.
4 TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions
Function
RH W1
RC C
Heat 1 Heat 2
If using the same power source
for the thermostat and heating
loads, install a jumper
across RC and RH.
Figure 5: TEC2103-2 Thermostat Wiring Schematic
N2+
N2-
5-pole bottom connector
REF
W2
D1 D2
N2 Device Mapping
When adding the TEC2103-2 thermostat to the
Metasys system (Person-Machine Interface [PMI] and
Companion system), you must define the TEC2103-2
thermostat as a Vendor Device (VND). For the NCM,
except as noted in Table 1, Footnote c, do not direct
map any points. Run control of these points through
the Control System (CS) object. See the Setting the
N2 Address (N2 addr) section to set the address for
the thermostat.
3-pole right top
5-pole left top connector
connector
C
Y1 G RC
Y2
RH W1 W2
D1 D2 RS
Scom
Scom N2+
RS OS
Remote
Auxiliary/Outdoor
Room Sensor
Sensor
OS
REF
N2-
Metasys, CPN,
NCM